Some social changes caused by the Black Death were positive. Before the plague, peasant serfs were confined to their lord's estate and received little or no payment for their work . Overpopulation and shortage of resources led to malnutrition and extreme poverty for many peasants. After so many people died, serfs were free to move to other estates that provided better conditions and receive top pay for their work. Landowners, desperate for their labor, often provided free tools, housing, seed and farmland . The worker farmed all he could and paid only the rent.